View Source mix phx.gen.notifier (Phoenix v1.6.12)
Generates a notifier that delivers emails by default.
$ mix phx.gen.notifier Accounts User welcome_user reset_password confirmation_instructions
This task expects a context module name, followed by a notifier name and one or more message names. Messages are the functions that will be created prefixed by "deliver", so the message name should be "snake_case" without punctuation.
Additionally a context app can be specified with the flag
--context-app, which is useful if the notifier is being
generated in a different app under an umbrella.
$ mix phx.gen.notifier Accounts User welcome_user --context-app marketing
The app "marketing" must exist before the command is executed.